of/irq: do irq resolution in platform_get_irq_byname()

of/irq: do irq resolution in platform_get_irq_byname()

The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef
"of/irq: do irq resolution in platform_get_irq" from Rob Herring -
moves resolving of the interrupt resources in platform_get_irq().
But this solution isn't complete because platform_get_irq_byname()
need to be modified the same way.

Hence, fix it by adding interrupt resolution code at the
platform_get_irq_byname() function too.

Cc: Russell King <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Tony Lindgren <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Thierry Reding <[email protected]>
Signed-off-by: Grygorii Strashko <[email protected]>
Signed-off-by: Grant Likely <[email protected]>